﻿namespace Model
{
    public class Class1
    {
        public string XingMing;
        public void RefDemo()
        {
            RefDemo2(ref age)
            int age = 1;
            string num = "0";
            int num_int = 0;
            int.TryParse(num, out num_int);
        }
        public void RefDemo2(ref int age)
        {
            age+=10
        }
    }
}
